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by Cisco
Product Line: Cisco 4000 Series
Product Type: Integrated Services Router
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Original price $0.00 - Original price $0.00
Original price
$0.00 - $0.00
Current price $0.00
Title: Surplus

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Product Description

The ISR4451-X-AX/K9 is designed with a 1 Gbps to 2 Gbps aggregate throughput and includes four 10/100/1000 RJ-45 ports and four SFP ports for enhanced connectivity. It supports a range of expansion options with three NIM slots, two Enhanced Service Module slots, and a single Onboard ISC slot, alongside 2 GB DDR3 data plane memory and 4 GB DDR3 control/services plane memory. The device features OIR support, dual external USB 2.0 Type A slots, and operates within a power range of 158 W to 1000 W, depending on the power supply used, making it adaptable for various operational demands.

FAQs for the ISR4451-X-AX/K9

  • What is the aggregate throughput range of this device?
    The aggregate throughput ranges from 1 Gbps to 2 Gbps.
  • How many total onboard WAN or LAN ports does the device feature?
    The device features 4 onboard WAN or LAN 10/100/1000 ports.
  • What type and how many SFP ports are available?
    There are 4 SFP ports available on the device.
  • Can you detail the NIM slots available on this hardware?
    The hardware is equipped with 3 NIM slots.
  • How many Enhanced Service Module Slots does the device have?
    It has 2 Enhanced Service Module Slots.
  • What memory capacities are available for Data Plane and Control/Services Plane?
    The Data Plane Memory is 2 GB DDR3, and the Control/Services Plane Memory is 4 GB DDR3.
  • Does the device support Online Insertion and Removal (OIR)?
    Yes, the device supports OIR.
  • What are the specifications for the device's flash memory?
    The device comes with 8 GB of flash memory.
  • What is the typical power consumption of this networking hardware?
    The typical power consumption is 158 W.
  • How does the maximum power vary with AC and PoE power supplies?
    With an AC power supply, the maximum power is 450 W, and with a PoE power supply, it's 1000 W.

Product Review

The CISCO ISR4451-X-AX/K9 offers a scalable throughput from 1 Gbps to 2 Gbps, catering to varying network demands, and comes equipped with a diverse range of ports including four RJ-45, four SFP ports, and ample expansion slots (three NIM and two Enhanced Service Module slots), enhancing its adaptability in different network configurations. However, its control and data plane memory capacities (4 GB and 2 GB DDR3, respectively) might be limiting for highly intensive applications, potentially impacting performance in demanding scenarios. Additionally, the unit's power requirements, with a typical consumption of 158 W and a maximum of 450 W (1000 W with PoE power supply), necessitate careful planning regarding power supply and cooling in dense network environments.


The CISCO ISR4451-X-AX/K9 is designed to deliver high performance for both enterprise and service provider networks. This router is engineered to support a range of services, from data to voice and video, making it a versatile choice for diverse networking environments. With its scalable architecture, the ISR4451-X-AX/K9 can handle data rates from 1 Gbps to 2 Gbps, ensuring efficient data flow across the network. At the core of its design, the router features 4 onboard WAN or LAN 10/100/1000 ports, providing flexible connectivity options. Additionally, it is equipped with 4 RJ-45 ports and 4 SFP ports, enabling both copper and fiber connections. The inclusion of 3 Network Interface Module (NIM) slots and 2 Enhanced Service Module (ESM) slots further extend the router’s capabilities, allowing for customization and expansion according to network requirements. The ISR4451-X-AX/K9 is designed with a focus on performance and reliability. It incorporates 2 GB DDR3 memory dedicated to the data plane and 4 GB DDR3 memory for the control and services plane, ensuring efficient processing and routing of data. The router’s storage is supported by 8 GB of flash memory, providing ample space for the operating system and configuration files. Key features include: - <>Aggregate throughput from 1 Gbps to 2 Gbps, ensuring efficient handling of network traffic. - <>Support for Online Insertion and Removal (OIR), enhancing the router's uptime and serviceability. - <>Flexibility in power supply options, with a typical power consumption of 158 W and a maximum of 450 W with an AC power supply or 1000 W with a PoE power supply. In terms of connectivity, the router offers comprehensive options including two external USB 2.0 Type-A slots for additional storage or input devices, a USB console port for management, and both a serial console and a serial auxiliary port for legacy management interfaces. The ISR4451-X-AX/K9 is designed to operate within a wide range of AC input voltages (100 to 240 VAC) and frequencies (47 to 63 Hz), making it adaptable to various power supplies worldwide. Its power efficiency is highlighted by its typical power consumption of 158 W, with the capability to support up to 450 W with an AC power supply and up to 1000 W when equipped with a PoE power supply, accommodating high-power devices connected to the router. Physically, the router presents a compact form factor with dimensions of 88.9 mm in height, 438.15 mm in width, and 469.9 mm in depth, fitting into standard server racks and cabinets. Its design supports operational flexibility and scalability, essential for adapting to growing network demands. In summary, the CISCO ISR4451-X-AX/K9 is a powerful and scalable networking solution designed to meet the demands of modern enterprise and service provider networks. It offers comprehensive connectivity options, flexible expansion capabilities, and efficient performance, making it an essential component for any data-intensive environment.


Part NumberCISCO ISR4451-X-AX/K9
Aggregate Throughput1 to 2 Gbps
Integrated WAN/LAN Ports4
Ethernet Ports4
Optical Network Ports4
Network Interface Module Slots3
Service Module Expansion Slots2
Internal Service Card Slot1
Processing Memory (Data Plane)2 GB DDR3
Processing Memory (Control/Services Plane)4 GB DDR3
Storage Memory8 GB
Online Insertion and Removal (OIR)Supported
USB Type-A Slots2
Mini USB Console Port1
Main Console Port (RJ-45)1
Auxiliary Port (RJ-45)1
Power Supply Voltage100 to 240 VAC
Power Supply Frequency47 to 63 Hz
Current Consumption Range7.1 to 3 A
Maximum Surge Current<50 A
Standard Power Consumption158 W
Max Power with Standard Supply450 W
Max Power with PoE Supply1000 W
Device Height88.9 mm
Device Width438.15 mm
Device Depth469.9 mm

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